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.TH CURLOPT_PROXY_SSL_OPTIONS 3 "May 31, 2017" "libcurl 7.55.1" "curl_easy_setopt options"

.SH NAME
CURLOPT_PROXY_SSL_OPTIONS \- set proxy SSL behavior options
.SH SYNOPSIS
#include <curl/curl.h>

CURLcode curl_easy_setopt(CURL *handle, CURLOPT_PROXY_SSL_OPTIONS, long bitmask);
.SH DESCRIPTION
Pass a long with a bitmask to tell libcurl about specific SSL behaviors.

\fICURLSSLOPT_ALLOW_BEAST\fP tells libcurl to not attempt to use any
workarounds for a security flaw in the SSL3 and TLS1.0 protocols.  If this
option isn't used or this bit is set to 0, the SSL layer libcurl uses may use
a work-around for this flaw although it might cause interoperability problems
with some (older) SSL implementations. WARNING: avoiding this work-around
lessens the security, and by setting this option to 1 you ask for exactly
that.  This option is only supported for DarwinSSL, NSS and OpenSSL.

\fICURLSSLOPT_NO_REVOKE\fP tells libcurl to disable certificate revocation
checks for those SSL backends where such behavior is present. \fBCurrently
this option is only supported for WinSSL (the native Windows SSL library),
with an exception in the case of Windows' Untrusted Publishers blacklist which
it seems can't be bypassed.\fP This option may have broader support to
accommodate other SSL backends in the future.
https://curl.haxx.se/docs/ssl-compared.html

.SH DEFAULT
0
.SH PROTOCOLS
All
.SH AVAILABLE
Added in 7.52.0
.SH EXAMPLE
.nf
CURL *curl = curl_easy_init();
if(curl) {
  curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/");
  curl_easy_setopt(curl, CURLOPT_PROXY, "https://proxy");
  /* weaken TLS only for use with silly proxies */
  curl_easy_setopt(curl, CURLOPT_PROXY_SSL_OPTIONS, CURLSSLOPT_ALLOW_BEAST |
                   CURLSSLOPT_NO_REVOKE);
  ret = curl_easy_perform(curl);
  curl_easy_cleanup(curl);
}
.fi
.SH RETURN VALUE
Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
.SH "SEE ALSO"
.BR CURLOPT_PROXY_SSLVERSION "(3), " CURLOPT_PROXY_SSL_CIPHER_LIST "(3), "
.BR CURLOPT_SSLVERSION "(3), " CURLOPT_SSL_CIPHER_LIST "(3), "
